Peripheral component interface express (PCIe) switching circuit and method for global asynchronous in-station synchronization

A technology of switching circuits and internal synchronization, which is applied to electrical components, climate sustainability, transmission systems, etc. It can solve the problems of lack of PCIe switching circuits, achieve strong scalability, reduce design risks, and simplify the overall structure

Active Publication Date: 2022-08-05
XIAN MICROELECTRONICS TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of global asynchronous intra-station synchronous PCIe switch circuit and method, to solve the existing problem of lacking PCIe switch circuit and its own mechanism to realize switching

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  • Peripheral component interface express (PCIe) switching circuit and method for global asynchronous in-station synchronization
  • Peripheral component interface express (PCIe) switching circuit and method for global asynchronous in-station synchronization
  • Peripheral component interface express (PCIe) switching circuit and method for global asynchronous in-station synchronization

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Embodiment Construction

[0042] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention; the terms "first", "second", "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise Clearly stipulated and defined, the terms "inst...

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Abstract

The invention provides a global asynchronous in-station synchronization PCIe switching circuit and method, the system comprises a plurality of station modules, and all the station modules are jointly connected with an access arbitration module; the access arbitration module interacts with an external EERROM through an EERROM controller, and the access arbitration module interacts with an external IIC host through an IIC bus controller; the station module is connected with an upstream port through a PCIe link; according to the method, the circuit is divided into a plurality of station modules, the overall structure of the circuit is simple, the function division of each module is reasonable, and efficient parallel logic design of the sub-modules is facilitated; all ports in the same station work in the same clock domain, different stations can work in different clock domains, the clock domains of the circuit are separated clearly and concisely, cross-clock-domain design and check can be conveniently carried out, the common cross-clock-domain design risk is greatly reduced, and the reliability of the circuit is ensured.

Description

technical field [0001] The invention belongs to the technical field of integrated circuit design, and relates to a PCIe switching circuit and method for global asynchronous intra-station synchronization. Background technique [0002] PCIe bus is the third-generation high-performance IO bus launched after the first-generation EISA, ISA, VESA bus and the second-generation AGP, PCI, and PCI-X bus, and is widely used in computer systems. [0003] In a PCIe system, a PCIe switch circuit (Switch) is used to interconnect multiple electronic components or modules for communication. The PCIe switching circuit integrates multiple virtual PCI-to-PCI bridges, generally having two or more PCIe ports, the upstream port (Upstream Port) is connected to the root complex (Root Complex, RC), and the downstream port (Downstream Port) is connected to the Root Complex (RC). Port) to connect the endpoint (Endpoint) device. figure 1 A conceptual logical block diagram of a PCIe switch circuit. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L49/10H04L49/00H04L49/35H04L49/111
CPCH04L49/10H04L49/30H04L49/35H04L49/70Y02D10/00
Inventor 翟宝峰王剑峰祁美娟杨靓郝奎董劭颖王蕊琪
Owner XIAN MICROELECTRONICS TECH INST
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